2026Canadian prices and NRCan ratings
BMW Z4 M40i vs Mercedes-Benz AMG SL 55 4MATIC+
Key differences
From published figures, not a road test- The Z4 M40i uses 5.4 L/100 km less combined (9.3 vs 14.7), about 1,080 L less fuel over 20,000 km.
- Higher Vehonix efficiency score for the Z4 M40i: 4.9/10 vs 1.3/10.
- Transport Canada lists 1 safety recall for the 2026 Z4 M40i and 0 for the AMG SL 55 4MATIC+.
Side by side
Add a third model →| Spec | BMWBMW Z4 M40i | Mercedes-BenzMercedes-Benz AMG SL 55 4MATIC+ |
|---|---|---|
| MSRP from | — | — |
| Vehonix efficiency score (out of 10) | 4.9/10 | 1.3/10 |
| Body | Convertible | Convertible |
| Fuel | Gasoline | Gasoline |
| Combined (L or Le/100 km) | 9.3 | 14.7 |
| City | 10.4 | 17.3 |
| Highway | 8 | 11.4 |
| Electric range | — | — |
| Level 2 charge (240 V) | — | — |
| Total range (PHEV) | — | — |
| CO2 (g/km) | 215 | 343 |
| CO2 rating (out of 10) | — | — |
| Smog rating (out of 10) | — | — |
| Max power | — | — |
| Seats | — | — |
| Drivetrain | — | — |
| AWD / 4WD offered (winter) | No | No |
| Fuel required | — | — |
| Manual offered | No | No |
| Rated configurations | 2 | 1 |
| 2026 safety recalls (Transport Canada) | 1 | 0 |
The best figure on each row is highlighted. MSRP is the cheapest checked trim; fuel use is the most efficient trim.